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Finding the Fourth Proportional to 101,616.50, 140,239.37 and 56,308.68

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Solution

The fourth proportional to 101,616.50, 140,239.37 and 56,308.68 is: 77,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,616.50 : 140,239.37 = 56,308.68 : x
  2. Step 2: Convert to fraction form
    101,616.50/140,239.37 = 56,308.68/x
  3. Step 3: Cross multiply
    101,616.50x = 140,239.37 × 56,308.68
  4. Step 4: Simplify right side
    101,616.50x = 7,896,693,527.19
  5. Step 5: Solve for x
    x = 7,896,693,527.19/101,616.50
  6. Step 6: Final answer
    x = 77,710.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.